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BMD 10

the benchmark dose (BMD associated with a 10% response (for tumours upon lifetime exposure after correction for spontaneous incidence; for other effects in a specified study).

Source: REACH


the lower 95% confidence interval of a benchmark dose representing a 10% response (e.g. tumour response upon lifetime exposure), i.e. the lower 95% confidence interval of a BMD 10.

Source: REACH


body mass index

BMRC criterion
biologica oxigene demand
body burden

the total amount of a chemical substance in the body. Some substances build up in the body because they are stored in fat or bone or because they leave the body very slowly.

body sound insulation
Body weight (Bw)
important factor in the health risk assessment of chemicals. To exclude the difference between individuals (e.g. adult man contra child), the toxicological endpoints (NOAEL, LOAEL, ED, BMD) are given in a specific value related to the body mass, e.g. in dose/kg body weight.

wetland that has no significant inflows or outflows, supports acidophilic mosses, particularly Sphagnum and in which peat is accumulating. Similar to: fen, marsh, pocosin, swamp, and wetland.

boiling point
the temperature at which the pressure of the saturated vapour of a liquid equals the standard atmospheric pressure. A physico-chemical parameter required by REACH. This data is one of the criteria used in assigning a substance to an appropriate flammability category. (classification, classification and labelling of chemicals, REACH) (http://www.prc.cnrs-gif.fr/reach/en/physicochemical_data.html) The study does not need to be conducted for gases; or for solids which either melt above 300C or decompose before boiling. In such cases the boiling point under reduced pressure may be estimated or measured; or for substances which decompose before boiling (e.g. auto-oxidation, rearrangement, degradation, decomposition, etc.).
breast cancer

breast cancer can begin in different areas of the breast – the ducts, the lobules, or in some cases, the tissue in between. The different types of breast cancer nclude non-invasive, invasive, recurrent, and metastatic breast cancers. Breast cancer may occur in men.

DCIS – Ductal Carcinoma In Situ

IDC – Invasive Ductal Carcinoma

IDC Type: Tubular Carcinoma of the Breast

IDC Type: Medullary Carcinoma of the Breast

IDC Type: Mucinous Carcinoma of the Breast

IDC Type: Papillary Carcinoma of the Breast

IDC Type: Cribriform Carcinoma of the Breast

ILC – Invasive Lobular Carcinoma

Inflammatory Breast Cancer

LCIS – Lobular Carcinoma In Situ

Male Breast Cancer

Paget's Disease of the Nipple

Phyllodes Tumors of the Breast

Recurrent and Metastatic Breast Cancer

Source: http://www.breastcancer.org/symptoms/types/


BAT Reference Document

brownfield investment

investment on brownfield after clean-up. The economical backgroud of brownfiel reuse is the cost-benefit assessment: a beneficial new land use maybe able to cover the costs of the remediation/rehabilitation.

brownfield land


brownfield or brownfield land is a moderately contaminated area previously were in industrial, mining, waste disposal or certain commercial uses. These sites have the potential to be reused once it is cleaned up.

Brownian motion
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benzene, or benzol, is an aromatic ring with the molecular formula C6H6. benzene is a colorless and flammable liquid with a strong smell and a relatively high melting point. Because it is a known carcinogen, its use as in gasoline is now limited, but it is an important industrialsolvent and precursor in the production of drugs and plastics. benzene is a natural constituent of mineral oil.

Alkylbenzenes are organic compounds that has an alkyl group bound to a benzene ring. Well known alkylbenzenes are methylbenzene, ethylbenzene and toluene, all of them are colorless flammable liquids obtained from petroleum or coal tar, used as a solvent for gums and lacquers and in high-octane fuels.

bulk density

bulk density is a property of powders, granules and other "divided" solids, especially used in reference to mineral components (soil, gravel), chemical substances, (pharmaceutical) ingredients, foodstuff or any other masses of corpuscular or particulate matter. It is defined as the mass of many particles of the material divided by the total volume they occupy. The total volume includes particle volume, inter-particle void volume and internal pore volume.

Bulk density is not an intrinsic property of a material; it can change depending on how the material is handled. For example, a powder poured in to a cylinder will have a particular bulk density; if the cylinder is disturbed, the powder particles will move and usually settle closer together, resulting in a higher bulk density. For this reason, the bulk density of powders is usually reported both as "freely settled" (or "poured" density) and "tapped" density (where the tapped density refers to the bulk density of the powder after a specified compaction process, usually involving vibration of the container.)

Sorce: http://en.wikipedia.org/wiki/Bulk_density

bulk sample

a sample taken from a larger quantity (lot) for analysis or recording purposes.

bushel, unit of measure

a bushel is a British and U.S. customary unit of dry volume, equivalent in each of these systems to 4 pecks or 8 gallons. It is used for volumes of dry (not liquid) materials, most often in agriculture. The name derives from the 14th century buschel or busschel, a box. Its conversion to other units of volume:

bushels (US)bushels (British)0.968 9
bushels (US)cubic feet1.244 456
bushels (US)cubic inches2,150.42
bushels (US)cubic meters0.035 239 07
bushels (US)cubic yards0.046 090 96
bushels (US)dekaliters3.523 907
bushels (US)dry pints64
bushels (US)dry quarts32
bushels (US)liters35.239 070 17
bushels (US)pecks4


Body weight, used in toxicology for quantification of the intake by human, e.g. 3 mg/kg Bw, meaning 3 mg intake per kg.